Sunlite, 4 watt incandescent medium based R16 reflector bulb works with most 12 volt lighting fixtures, will provide 36 lumens of light output, and will last for an average of 1.1 years. This bulb features a frosted finish that provides a comfortable soft glow. Incandescent lighting is commonly used for decorative, office, residential, commercial and special purpose lamps. These bulbs are also great for decorative and special purpose lighting applications.